For a population to evolve, there must be genetic differences between organisms in that population. These differences arise by
A)mutation.
B)a change in an organism's behavior.
C)natural selection.
D)common descent.

Question

Quizplus · Accepted Answer

Genetic differences can arise due to mutations, which are random changes in the DNA sequence of an organism's genes. This change can result in new traits, some of which may be beneficial, and therefore, can be subject to natural selection. Changes in behavior do not necessarily result in genetic differences and may not be heritable. Natural selection acts on existing genetic variation, so it cannot create genetic differences by itself. Common descent refers to the idea that all living things share a common ancestry and does not directly explain the origin of genetic differences within a population.

For a Population to Evolve, There Must Be Genetic Differences